Help?

Rebecca

On June 24th, we had a miscarriage. Since then, I've had one regular cycle. But this month, nothing. I am currently 5 days late and I'm still testing negative. This morning when I wiped, there was a bit of CM with a hint of brown in it. I'm so confused, is it possible that I ovulated much later than I thought? Could my cycle change so much? What is going on?